What is a 33KV line?

What is a 33KV line?

33kV to 11kV transformers steps down the the voltage to a safe level, which is then distributed via 11kV feeders to homes and businesses. 33kV lines on the other hand involve much higher voltages and are used to distribute power from one small sub-station to another.

How much current is in 11KV line?

An 11 kV distribution circuit may carry 150 A in each of its three phases, thus transmitting a power of 3 MW. A 400 V final distribution circuit may carry 200 A in each of its three phases, thus transmitting a power of 150 kW.

How do you identify 33KV?

For the 11KV transmission line, generally Double Pole(DP) structure is used. In a transmission line, if three pieces of disc insulators per phase are connected, then the KV of the transmission line is 33KV.

How many amps are high voltage lines?

The line can carry 500-1000 amps depending on ambient weather conditions. Cooler temperatures, clouds, and wind help lower resistance, so the voltage can push more electrons (amperage) through the conductor matrix.

Why transmission is 11kV or 33kV 66kV?

But we already know that there are some voltage drop due to the resistance of the transmission lines. For this reason, they transmit 10% extra voltage. Sending Voltage = 10kV x 10% = 11kV. While the receiving end voltage are 10kV due to voltage drop.

How many kVA is 2000 amps?

kVA to Amps Conversion Chart

kVA kW 208 V
1,563 kVA 1,250 kW 4,338 A
1,875 kVA 1,500 kW 5,204 A
2,188 kVA 1,750 kW 6,073 A
2,500 kVA 2,000 kW 6,939 A

Why 11kV 22kv 33kv 66kv 132kv?

The reason is something historical. In olden days when the electricity becomes popular, the people had a misconception that in the transmission line there would be a voltage loss of around 10%. So in order to get 100 at the load point they started sending 110 from supply side. This is the reason.

How does a 33kV to 11kV transformer work?

33kV to 11kV transformers steps down the the voltage to a safe level, which is then distributed via 11kV feeders to homes and businesses. Many people question why the voltage is as high as 33kV in the first place.

How big of a clearance do you need for a high voltage line?

Clearances from Buildings of HT and EHT voltage lines IE Rule 80. Vertical Distance. High voltage lines up to 33KV. 3.7 Meter. Extra High Voltage. 3.7 Meter + Add 0.3 meter for every additional 33KV. Horizontal clearance between the conductor and Building. High Voltage Up to 11 KV. 1.2 Meter.

What is the voltage of an underground HV / MV / LV cable?

Underground telecommunication cable shall be with underground power cable of voltage exceeding 33 kV. Get access to premium HV/MV/LV technical articles, electrical engineering guides, research studies and much more! It helps you to shape up your technical skills in your everyday life as an electrical engineer.

What does capacity mean on a transformer kVA?

The capacity means for a given transformer how much electrical load can be put on this transformer. Say for a transformer of 230 / 12 volts and 60 VA capacity ( Single phase) The max load can be 5 Amps on 12 V side if the load is exceeded the transformer will get overheated and may burn off.

What is a 33kV line?

What is a 33kV line?

33kV to 11kV transformers steps down the the voltage to a safe level, which is then distributed via 11kV feeders to homes and businesses. 33kV lines on the other hand involve much higher voltages and are used to distribute power from one small sub-station to another.

How can you tell if a transmission line is 33 kV?

For the 11KV transmission line, generally Double Pole(DP) structure is used. In a transmission line, if three pieces of disc insulators per phase are connected, then the KV of the transmission line is 33KV.

What is the meaning of 33 11 kV?

33 KV Sub-transmission system is feeding power supply to the HT Consumers and 33/11 KV Substations. 11 KV Primary Distribution system is emanating from 33/11 KV Substations feeding power supply to HT Consumers and 11000/440-220 volts Distribution transformers for supply to LT Three Phase and Single-Phase consumers.

What is the safe distance from 33kV line?

Min. Safe Vertical Distance above Railway Track

Description of Clearance Distance (Min)
Stay wires 5.5 Meter
Conductors up to 33 kV 6.5 Meter
Conductors above 33 kV to 220 kV 7.5 Meter
Conductors above 220 kV. 8 Meter

What is LV switchgear MV?

A switchgear system that is capable of handling between 3kv and 36kv is referred to as medium voltage switchgear. These come in many types, such as metal-enclosed outdoor type, metal-enclosed indoor type, as well as an outdoor type without metal enclosure, among others.

How much current is in 11kV line?

An 11 kV distribution circuit may carry 150 A in each of its three phases, thus transmitting a power of 3 MW. A 400 V final distribution circuit may carry 200 A in each of its three phases, thus transmitting a power of 150 kW.

How much current does 11 kV line flow?

What distance is safe for 11 kV power lines?

As per the Indian Electricity Act, buildings should maintain a horizontal distance of 1.2 metres from 11kV lines and 4 metres from 66kV lines.

How far should a home be from power lines?

For 133 kV Power lines you have to maintain 100 feet distance. For 230 kV Power lines you have to maintain 150 feet distance. For 345 kV Power lines you have to maintain 250 feet distance.

What is the voltage of a 33 kV transmission line?

Therefore a 33 kV transmission line has 33 kV as line voltage (phase to phase voltage) and the phase voltage (phase to neutral) will be 1/sqrt(3) times the line voltage i.e. 19.05 kV.

How are 33 kV lines carried on pylons?

33 kV lines are either carried on small lattice steel pylons or on wood poles. There are many different variants of lines design but they all produce roughly similar fields.

Which is more common 11kV or 33kV?

However, 11kV lines are more common in residential areas. This is the line that brings power to your locality Transformer (11000/415V) which is distributed to consumers i.e. homes and offices. 33kV lines on the other hand is not usually found that close to residential areas.

How big is an 11 kV HT line?

1. Poles length of pole 8 meters or 9 meters, working load 140 Kg. Cement concrete proportion, 1:2:3 or steel with M.S round. 2. Cross Arm Type: H.T Horizontal cross arm or H.T v-cross arm. With HT single top support, pole clamp, bolt, nuts, washers complete set.